ẢNH HƯỞNG CỦA LIỀU LƯỢNG PHÂN BÓN ĐẾN NĂNG SUẤT CỦA GIỐNG NGÔ LAI LVN68
ẢNH HƯỞNG CỦA LIỀU LƯỢNG PHÂN BÓN ĐẾN NĂNG SUẤT CỦA GIỐNG NGÔ LAI LVN68
The effectiveness of fertilizer dosages to yield of hybrid maize, LVN68 variety
The experiments were carried in Summer-Autumn, Autumn-Winter and Winter-Spring cropping seasons in Trang Bom district- Dong Nai provice, Duc Trong distric, Lam Dong province and Tan Chau district, An Giang province from 2010 to 2012. The experiment includes 7 fertilizer dosages (kg/ha) 120N-80P2O5-80K2O; 120N-80P2O5- 100K2O; 150N-80P2O5-80K2O; 150N-80P2O5- 100K2O; 180N-80P2O5-80K2O; 180N-80P2O5- 100K2O and 150N-80P2O5-60K2O (check). The results showed that at the fertilizer dosage of 180N-80P2O5- 80K2O in Trang Bom - Dong Nai, DucTrong - Lam Dong and 180N-80P2O5-100K2O in Tan Chau - An Giang, LVN68 gave highest yield and higher than that of the check from 121.21 to 125.45 %. From the result, fertilizer dosage of 180N-80P2O5-80K2O (kg/ha) is the most suitable dosage for LVN68 in Trang Bom district, Dong Nai province, Duc Trong distric Lam Dong province and 180N80P2O5-100K2O (kg/ha) in Tan Chau district, An Giang province.